1 files changed, 91 insertions, 0 deletions
diff --git a/src/global/msg_stats_scan.c b/src/global/msg_stats_scan.c
new file mode 100644
index 0000000..504a6b0
--- /dev/null
+++ b/src/global/msg_stats_scan.c
@@ -0,0 +1,91 @@
+/*++
+/* NAME
+/*	msg_stats_scan
+/* SUMMARY
+/*	read MSG_STATS from stream
+/* SYNOPSIS
+/*	#include <msg_stats.h>
+/*
+/*	int	msg_stats_scan(scan_fn, stream, flags, ptr)
+/*	ATTR_SCAN_COMMON_FN scan_fn;
+/*	VSTREAM *stream;
+/*	int	flags;
+/*	void	*ptr;
+/* DESCRIPTION
+/*	msg_stats_scan() reads an MSG_STATS from the named stream
+/*	using the specified attribute scan routine. msg_stats_scan()
+/*	is meant to be passed as a call-back to attr_scan(), thusly:
+/*
+/*	... RECV_ATTR_FUNC(msg_stats_scan, (void *) &stats), ...
+/* DIAGNOSTICS
+/*	Fatal: out of memory.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+
+/* Utility library. */
+
+#include <attr.h>
+#include <vstring.h>
+#include <msg.h>
+
+/* Global library. */
+
+#include <mail_proto.h>
+#include <msg_stats.h>
+
+ /*
+  * SLMs.
+  */
+#define STR(x) vstring_str(x)
+#define LEN(x) VSTRING_LEN(x)
+
+/* msg_stats_scan - read MSG_STATS from stream */
+
+int     msg_stats_scan(ATTR_SCAN_COMMON_FN scan_fn, VSTREAM *fp,
+		               int flags, void *ptr)
+{
+    MSG_STATS *stats = (MSG_STATS *) ptr;
+    VSTRING *buf = vstring_alloc(sizeof(MSG_STATS) * 2);
+    int     ret;
+
+    /*
+     * Receive the entire structure. This is not only simpler but also likely
+     * to be quicker than having the sender figure out what fields need to be
+     * sent, converting those numbers to string and back, and having the
+     * receiver initialize the unused fields by hand.
+     * 
+     * XXX Would be nice if VSTRINGs could import a fixed-size buffer and
+     * gracefully reject attempts to extend it.
+     */
+    ret = scan_fn(fp, flags | ATTR_FLAG_MORE,
+		  RECV_ATTR_DATA(MAIL_ATTR_TIME, buf),
+		  ATTR_TYPE_END);
+    if (ret == 1) {
+	if (LEN(buf) == sizeof(*stats)) {
+	    memcpy((void *) stats, STR(buf), sizeof(*stats));
+	} else {
+	    msg_warn("msg_stats_scan: size mis-match: %u != %u",
+		     (unsigned) LEN(buf), (unsigned) sizeof(*stats));
+	    ret = (-1);
+	}
+    }
+    vstring_free(buf);
+    return (ret);
+}